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Microphotoluminescence study of Cu2ZnSnS4 polycrystals

[+] Author Affiliations
Maarja Grossberg, Pille Salu, Jaan Raudoja, Jüri Krustok

Tallinn University of Technology, Department of Materials Science, Ehitajate tee 5, 19086 Tallinn, Estonia

J. Photon. Energy. 3(1), 030599 (Jun 03, 2013). doi:10.1117/1.JPE.3.030599
History: Received April 22, 2013; Revised May 13, 2013; Accepted May 14, 2013
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Abstract.  Microphotoluminescence studies of Cu2ZnSnS4 polycrystals were performed. At room temperature, two photoluminescence (PL) bands were detected at 1.39 and 1.53 eV and attributed to band-to-tail (BT) and band-to-band (BB) recombination, respectively. At lower temperatures, band-to-impurity recombination always dominates. The results show that the model of heavily doped semiconductors applies to Cu2ZnSnS4 and that, in contrast to the ternary chalcopyrites, the BT recombination in Cu2ZnSnS4 has very low intensity. The laser power dependency of the PL intensity shows that the recombination mechanism of BT and BB bands exhibits an exciton-like behavior.

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© 2013 Society of Photo-Optical Instrumentation Engineers

Citation

Maarja Grossberg ; Pille Salu ; Jaan Raudoja and Jüri Krustok
"Microphotoluminescence study of Cu2ZnSnS4 polycrystals", J. Photon. Energy. 3(1), 030599 (Jun 03, 2013). ; http://dx.doi.org/10.1117/1.JPE.3.030599


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